the fbi. we think of the fbi as a domestic agency, it's the fbi that's part of the u.s. government that has the authority to investigate deaths of americans in all other parts of the world. fbi did it in the embassy bombings in kenya, in tanzania in 1998, and the "uss cole" bombing in 2000 and mumbai bombings in india in 2008 and now the fbi is investigating in libya or at least we're told they are on their way. the fbi being dispatched to libya is yet another reminder what happened in libya appears to be a different kettle of fish than what is happening at all the other embassies and u.s. sites around the world today. the attack that killed the u.s. ambassador appears to be a coordinated military assault by well-armed men who arrived at the scene quite separately from any civilian protest. given the militant groups known to operate in the area of benghazi and the types of attacks for which those groups have claimed credit in the past, intelligence officials tell the "washington post" the fbi's tentative conclusion, their working hypothesis about what happened in libya i